Strontium Titanate (SrTiO3) Nanoparticles – Properties, Applications

Jun 5 2013

Applications of nanoparticles have dominated numerous fields such as pharmaceutical, cosmetics, biomedicine and electronics. This article will elaborate on the properties and applications of strontium titanate nanoparticles.

Strontium titanate (SrTiO₃) nanoparticles are black spherical particles having a high surface area. They are available in coated, dispersed, high and ultra high purity forms. They are known by other names such as strontium titanium trioxide, strontium titanium oxide and strontium dioxido(oxo)titanium. Strontium belongs to Block S, Period 5 while titanium belongs to Block D, Period 4 and oxygen belongs to Block P and Period 2 of the periodic table.

Chemical Properties

The following tables list the chemical properties of strontium titanate.

Chemical Data
Chemical symbol	SrTiO₃
CAS No	12060-59-2
Group	Strontium 2 Titanium 4 Oxygen 16
Electronic configuration	Strontium [Kr] 5s² Titanium [Ar] 3d² 4s² Oxygen [He] 2s² 2p⁴

Chemical Composition
Element	Content (%)
Strontium	47.7%
Titanium	26.1%
Oxygen	26.2%

Physical Properties

Strontium titanate nanoparticles appear in the form of a black powder having a spherical surface area. The table below provides the physical properties of these nanoparticles.

Properties	Metric	Imperial
Density	4.81 g/cm³	0.173 lb/in³
Molar Mass	183.49 g/mol	-

Thermal Properties

The thermal properties of strontium titanate nanoparticles are given in the table below.

Properties	Metric	Imperial
Melting Point	2080°C	3776°F
Boiling Point	>3000°C	>5432°F

Applications

Given below are some of the chief applications of strontium titanate:

In tunable microwave capacitors
Flat panel displays, field emission displays
Microwave solitons, PTC thermistors and varistors
Magnetic field insensitive thermometers
Ultralow-temperature scanning microscopes
Semiconductive ceramics
Pyroelectric far-infrared detectors
Alloy and catalyst applications.

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